Abstract: A method for laser welding a pair of metal pins delivers a laser beam to a work-side of the pair of metal pins where a respective pair of surfaces of the metal pins are adjacent to each other and face in the same direction. The laser beam first traces a first path on the work-side to form a melt pool by keyhole welding. The first path crosses an interface between the metal pins. After tracing the first path, the laser beam is switched to trace a second path on the work-side with the laser beam at a delivered rate of energy per unit path length that is less than the one used for the first path. The second path crosses the interface and is within the first path. The method is well-suited for welding of hairpin and I-pin stators.

Abstract: Gear unit with a gear unit housing, a drive-side and an output-side shaft and a gear ratio stage. The gear unit housing has a toothing space in which there are intermeshing toothed wheels and a bearing space separated from the toothing space. The bearing space in which bearing lubricating oil can be collected is operated under atmospheric pressure. The bearing lubricating oil is guided from the bearing space to an oil collecting receptacle external to the gear unit. The toothing lubricating oil collected in the toothing space is fed to the oil collecting receptacle to be at least partially separated from the bearing lubricating oil. In partial vacuum operation the toothing lubricating oil is conveyed from the toothing space into the oil collecting via a delivery pump, and in atmospheric operation, the toothing lubricating oil is conveyed from the toothing space into the oil collecting receptacle via a check valve.

Abstract: Gear unit with a gear unit housing, a drive-side and an output-side shaft and a gear ratio stage. The gear unit housing has a toothing space in which there are intermeshing toothed wheels and a bearing space separated from the toothing space. The bearing space in which bearing lubricating oil can be collected is operated under atmospheric pressure. The bearing lubricating oil is guided from the bearing space to an oil collecting receptacle external to the gear unit. The toothing lubricating oil collected in the toothing space is fed to the oil collecting receptacle to be at least partially separated from the bearing lubricating oil. In partial vacuum operation the toothing lubricating oil is conveyed from the toothing space into the oil collecting via a delivery pump, and in atmospheric operation, the toothing lubricating oil is conveyed from the toothing space into the oil collecting receptacle via a check valve.

Abstract: A filtering device for fluids features a filter element located in a filter housing and a heating device located in the flow path of the fluid. The heating device comprises a heating element that is held by a heating support which is located at the inner surface of the cover, with a water outlet connection being designed as one-piece with the heating support, the water outlet connection being directed outwards through a recess in the cover.

Abstract: A filtering device for fluids features a filter element located in a filter housing and a heating device located in the flow path of the fluid. The heating device comprises a heating element that is held by a heating support which is located at the inner surface of the cover, with a water outlet connection being designed as one-piece with the heating support, the water outlet connection being directed outwards through a recess in the cover.

Abstract: The use of linear and/or branched polyethylene oxide homopolymers, polypropylene oxide homopolymers and/or polyethylene/polypropylene oxide copolymers with randomly distributed ethylene oxide and propylene oxide units, which may be partly or completely etherified with C1-C4-alkanols, with an average molecular weight of more than 1000 to 8000, for reducing the clear lacquer wetting limits during two-layered lacquering with aqueous base lacquer/clear lacquer and suitable base lacquers.

Abstract: An installation housing for sound reproduction equipment used, for example, in a motor vehicle side door forms a closed resonance space by providing an indentation in the wall of the bodyshell part, and a half shell which holds the loudspeaker, is placed onto this indentation. A surrounding sealing strip is mounted in between and, together with a closed wall surface of the wall of the bodyshell part, forms a resonance space.